Wire connection for strain-insulators



P. L. PETERSON.

WIRE CONNECTION FOR STRAIN IYNSULATORS. APPLICATION FILED AUGIIS. 1919.

, 1,374,229, Patented Apr. 12, 1921.

fi vm 1 615661;- Pei-canon lyfzii ov. ree 5 PATENT OFFICE.

PETER I. PETERSON, 0F WORCESTER, MASSACHUSETTS.

WIRE CONNECTION FOR STRAIN-INSULATORS.

Specification of Letters Patent.

Patented Apr. 12, 1921.

Application filed August 15, 1919."Seria1 No. 317,829.

To all whom it may concern Be it known that I, PETER L. PETERSON, a citizen of the United States, residing at lVorcester, in the county of Worcester and State of Massachusetts, have invented a new and useful lVire Connection for Strain-Insulators, of which the following is a spec1fication.

This invention relates'to a wire connection for a strain insulator, particularly designed for use in electrical transmission lines or in other electrical installations.

It is the common practice to use 'a'single metal loop or clevis for this purpose, wlth a non-circular sleeve or thimble on the clevis, over which the wire is strained. This device is inconvenient to assemble and it is found difficult to hold the non-circular thimble in correct position while the wire 1s being strained around-the thimble. 7

It is the obj ect of my invention to improve the construction of wire connections for strain insulators and for other similar purposes by providing a grooved roll mounted between separate side plates, the connectlon being adapted to be easily assembled and connected to a strain insulator or other support.

A preferred form of my invention is shown in the drawings, in which Figure 1 is a side elevation of my 1mproved connection in use with a strain insulator;

F ig. 2 is a sectional elevatlon shown in Fig. 1;

Fig. 8 is an enlarged side elevation of a connector,'with one of the side plates removed, and

Fig. 4 is an enlarged view of the grooved roll.

of the parts a strain insulator l0 ofthe usual type, hav ing a metal cap 11, secured thereon, and a bolt or stud 12 secured therein and extending beneath the insulator.

My improved connector comprises a pair of side plates 13 and 1 1 having openings in their opposite ends, these plates being erably duplicates and being also preferably formed with their two ends identical. A

Referring to the drawings, I have shown prefgrooved roll 15 is rotatably mounted upon a pm 16 extending through the openings in one end of the side plates 13 and 14, and through an opening in the roll 15. The pin it} may be retained in position by a cotterpin 17 or in any other convenient manner.

A. similar pin 18 extending through holes in the opposite ends of the plates 13 and 14 may be used to connect the plates to the stud 12 or to any other suitable support. The wire IV is passed around the roll 15 and after being suitably strained is held in'position by a clamp 19 forming no part of my invention. The end of the wire may be bound down as indicated at 20 to form a neat and secure fastening.

'VVith this construction, the parts are much more easily assembled than with the device heretofore commonly used. As the wire is strained, the roll 15 turns upon the pin 16, decreasing the friction wire to bemore satisfactorily strained. The roll also is a good running fit upon the pin 16, whereas the old style thimble was necessarily provided with a very large opening in order that it might pass over the end of the clevis.

Having thus described my invention, it will be evident that changes and modifications can be made therein within the scope ofmy invention as set forth in the claim, and I do not wish to be otherwise limited to the details herein disclosed, but What I 7 claim is A separable wire connection for a strain insulator comprising a pair of duplicate independent side plates, a grooved roller positioned between said plates at one end thereof, and detachable connections between said plates, said connections comprising a pin extending through said plates at one end thereof and forming a bearing for said roller, a second pin extending through the opposite ends of said plates by which said plates may be connected to a support, and

commonly and permitting the removable fastening devices for holding said pins in position.

In testimony whereof I have hereunto afiixed my signature. PETER L. PETERSON. 

